<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>login</title>
</head>
<body>
    <h1>this is login page.</h1>

    <form action="/login" method="post">
        username: <input name="username" type="text"><p />
        password: <input name="password" type="text"><p />
        <input value="login" type="submit"><p />
    </form>
</body>
</html>